overlapping_interval function

Find the overlapping interval of two ranges.

This function should be applied to cases where the two ranges are inclusive of both endpoints. For example, the function can work for a pair of ranges like [0, 1] and [3, 4] but not for pairs like [0, 1) and (3, 5)

overlapping_interval(
  interval_1_begin = NULL,
  interval_1_end = NULL,
  interval_2_begin = NULL,
  interval_2_end = NULL
)

Arguments

• interval_1_begin: a number at which the first interval begins (the left INCLUSIVE endpoint of interval 1)
• interval_1_end: a number at which the first interval ends (the right INCLUSIVE endpoint of interval 1)
• interval_2_begin: a number at which the second interval begins (the left INCLUSIVE endpoint of interval 2)
• interval_2_end: a number at which the second interval ends (the right INCLUSIVE endpoint of interval 2)

Returns

the output will be NULL if there is no overlapping region or a vector of the endpoints of the overlapping interval.

Examples

overlapping_interval(1, 3, 2, 4)
overlapping_interval(1, 2.22, 2.22, 3)